Henry o hara



(No Model.)

H OHARA SPARK ARRESTER AND EXTINGUISHER.

Patented Oct. 16,1894.

Fig.5

INVENTOH WITNESSES:

ATTORNEYS n "cams VEYERS co. mm'aumu. wnsmuurom g. c.

UNITED STATES PATENT OFFICE.

HENRY OHARA, OF MELBOURNE, VICTORIA, ASSIGNOR OF ONE-HALF TO JOHN ALSTONWALLACE, OF SAME PLACE.

SPARK ARRESTER AND EXTINGUIS HER.

SPECIFICATION formingpart of Letters Patent No. 527,444, dated October16, 1894. Application filed May 25, 1894. Serial No. 512,454. (Nomodel.)

To wZZ whom it may concern:

Be it known that I, HENRY OHARA, a subject of the Queen of GreatBritain, residing at Cromwell House, No. 139 Collins Street, Melbourne,in the British Colony of Victoria, have invented new andusefulimprovements in apparatus for arresting and extinguishing sparks andcollecting the unconsu med carbon and the volatilized portion of thefumes issuing from the funnels of locomotive and other engines and fromthe chimneys of factory and other furnaces, of which the followingis aspecification.

This invention has been designed for the purpose of providingcffectiveapparatus for arresting and extinguishing sparks as they escapefrom the funnels 0t locomotive and other engines, and from the chimneysof factory and other furnaces. It has also been designed for the purposeof preventing the escape of unconsumed carbon into the atmosphere, as isnow commonly the case from factory and other chimneys, and also for thepurpose of collecting the volatilized particles which are carried awaywith the fumes arising from the calcining or roasting of refractory andother ores. Its most marked peculiarity is that it does not interferewith the draft except in the way of increasing or improving it. Itsessential novelty lies in the production of a vacuum above the top ormouth of the funnel or chimney, as the case may be, by directing one ormore strong jets of steam across and immediately above the top or mouthof such funnel or chimney. This assists the draft instead of hinderingor obstructing it, as in the case of most spark arresters, andfurthermore it extinguishes and carries away the sparks and soot, and byreason of its moisture it causes the soot, as well as the sparks, todeposit in any convenient receptacle. When the invention is applied tokilns or furnaces for roasting or calcining refractory or other ores thevolatilized particles are collected and deposited in the same way as thesoot. To assist in this operation I prefer to fix one or more disksorbaffle plates a short distance above the top or mouth of the funnel orchimney, so that the sparks, soot, and other volatilized particles willbe deflected by it or them, and so come more directly within theinfluence of the amples of how this invention can be carried intopractice.

Figures 1 and 2 are elevations of the upper part of the funnel of alocomotive, taken at right angles to each other, and illustrating myinvention in its simplest form. Fig. 3 is a vertical central sectionofan ordinary iron chimney, fitted with my invention, including areceptacle for the collection of the unconsumed carbon or volatilizedparticles. Fig. 4 is a plan, and Fig. 5 a side elevation of a nozzlewhich may be employed for directing the steam jet across the top ormouth of the funnel, while Fig. 6 is a horizontal section of a modifiedform of nozzle.

The same letters of reference indicate the same or corresponding partsin all the figures.

A represents the funnel or chimney to which my invention is to beapplied, and B is the nozzle of the steam pipe, from which a jet ofsteam is directed immediately above and across the top or mouth of thetunnel or chimney, while C represents the baiile plate or disk which issecured by brackets or other supports, D, a short distance above the topor mouth of said funnel or chimney. The ef fect of the jet of steamplaying across the top or mouth of the funnel in conjunction with thebaffle plate or disk C will be to cause the sparks to become saturatedwith steam and thus be extinguished before dropping on to the ground,and at the same time it alters their course.

If it is desired to save the extinguished sparks and other particles ofunconsumed carbon, or the volatilized particles from roasting orcalcining furnaces, they can be collected in a receptacle, E, providedfor the purpose on the opposite side of the funnel or chimney to thenozzle B, the upper end of said receptacle being fitted with inclinedmouth of this receptacle could be made with an inwardly projectingfunnel in order to prevent the return of such sparks.

The nozzle B on the end of the steam pipe may be constructed in manydifferent ways, as will be well understood by engineers. For

instance, it may be formed by flattening the outlet from said pipe (asshown in Figs. 4 and 5), or it may consist of a short curved cross pieceof pipe having perforations along its inner side, as shown in Fig. 6.

The disks or baffle plates .0 may be set at an incline, if so preferred,in order to direct the sparks, &c., downward, and instead of being flatthey may be curved or made in any form, such as a segment of a circle,and so that they will extend'from one side of the funnel or chimney tothe other. Having now particularly described and ascertained the natureof my said invention and in whatmanner the same is to be performed, Ideclare that what I claim is 1. In combination with a funnel or chimneyA, a steam pipe extending to the open end thereof and adapted todischarge steam across the topand a baffle plate above the chimney, saidsteam pipe being interposed between the end of the chimney and saidbaflie plate, substantially as described.

2. In combination with a chimney or funnel, a steam pipe dischargingacross the top thereof, a baffle plate above the end of the chimney anda receptacle alongside the chimney with an opening thereto in line withthe top of the chimney opposite the position of the steam pipe,substantially as described. HENRY OHARA.

Witnesses:

EDWARD WATERS, WALTER SMYTHVE BAYSTON.

